Abstract：    Kinesio taping (KT) has been extensively used in clinical and sports medicine. However, the effects of tape tension on proprioception, upright balance control, and maximal muscle strength in young adults were unclear. This study aimed to investigate the difference of KT tensions on position sense of the ankle joint, static balance, dynamic balance, and maximal voluntary contraction (MVC) of the dorsiflexion (DF). Fifteen male university students (age 21.6 ± 2.1 years) were participated and performed joint position sense test on the Biodex isokinetic system. The tape tensions, included non-taping, 0%, 50%, and 100% of KT tensions. The I-shape technique of KT was applied to the tibialis anterior of the dominate side. Then, participants performed active and passive ankle joint sense tests in the target angles of 5°, 10°, and 15° of DF. Static balance test was bipedal upright stance on stable/unstable surfaces with eye open and eye closed positions, respectively. Single-leg landing after drop jump from the 30 and 50 cm height positions was used for dynamic balance test. Biodex isokinetic system was used to measure the DF MVC. The results showed that 50% taping tension of KT application produced a smaller absolute value of ankle joint position sense test. Furthermore, static balance during bipedal stance on stable and unstable surfaces with eye closed positions was significantly smaller than that on stable surface with eye open position in all KT conditions. For the dynamic balance test, balance capacity of 30 cm test was significantly greater than that of 50 cm in all KT conditions. However, muscle strength in all KT conditions was not significantly different. This study concluded that 50% tension of KT application to the tibialis anterior could improve ankle joint position sense and posture balance rather than DF MVC in young adults. (Full text)